Calendering or friction-coating fabrics with rubber.



Nb.,76l,520.. 1 L PATENTBD MAY 31, .1904; P. M. .MA'IITHBW.

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PATENTED MAY .31, 1904.

MATTHEW GALBNDERINGOR FRICTION COATING FABRICS WITH RUBBER.

APPLIOATiON FILED JULY 31. 1902.

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No. 761,520. PATENTED MAY 31, 1904. y P. M. MATTHEW. GALENDERING 0RFRICTION comma FABRICS WITH RUBBER.

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No. 761,520. PATEIITEII MAYYSI, 1904.

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GALENDERINGOR FRICTION COATING FABRICS WITH RUBBER. APPLICATION rum)JULY 31.1902.

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No. 761,520. 'PATENTED MAY-31, 1904;

P. M.- MATTHEW. GALENDBRING ORPRIGTION COATING FABRIGSWITH RUBBER.

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UNITED STATES Patented May 31, 1909:.

PATENT OF IC PATRICK MILLAR MATTHEW, OF EDINBURGH, SCOTLAND.

CALENDE RING OR FRICTION-COATING 'FABRICS WITH RUBBER.

SPECIFICATION forming part of Letters Patent N0. 761,520, dated May 31,1904.

Application filed Ju1y.31, 1902. Serial No. 117,771. (llomodeL) i To allwhom it may concern.-

Be it known that I, PATRICK MILLAR MAT- THEW, a subject of the King ofthe United Kingdomof Great Britain and Ireland, residing at VictoriaRubber Mills, Edinburgh, Scotland, have invented certain new'and usefulImprovements in Calendering or Friction-Coating Fabrics with Rubber,(for which application forpatent has been made in Great Britain, No.6,455,dated March 17, 1902,) of which the following is a specification.

In calendering-machines as ordinarily constructedand used forcalendering or frictioncoating fabrics with rubber the coating orimpregnation of the fabric can only be applied according to the usualmethod for all practical purposes to the entire width of the fabricpassed through the calend ering-rolls, andconsequently the calenderingand friction-coating processes have not been of service in dealing withsuch fabrics as are used in making up waterproof articles, uppers ofrubber soled or goloshed shoes, and other goods in which an adhesivecoating of rubber is only required in. isolated strips orpatches or inmarginal strips, while the remainder of the surface should be left freefrom the rubber.

The object of my invention is to provide for applying to fabricsmarginal or isolated strips or patches of rubber by means of calenderingor friction-coating and by the use of the ordinary type of calenderingand friction-coating machine. my invention by bringing into contactunder pressure with the rubber-coated roll of the machine the parts .ofthe fabric to be coated, while leaving the other parts out of such closecontact with the roll, either by relieving them from pressure orsuitably protecting them by stencils orlike devices while the fabric ispassing through the machine.

In dealing with fabrics to which isolated strips or patches are to beapplied the desired result may be attained by placing on the under sideof the fabric thin bars, plates, or stencils of metal, cardboard, orother material shaped to the contour of the strips or patches to becoated or impregnated with rubber, so that on passing the fabric throughthe rolls the portions thereof over the bars, plates, or stentween therolls at other parts.

that difliculty, I so cut or form the stencil that every part of theplate which is cut or This. is effected according to I stencil.

. oils will be raised into close contact with the roll whichapplies thecoating of rubber.

thoroughly impregnate isolated parts of the fabric withfriction-coating, for which purpose great pressure of therubber-coatedroll upon the part of the fabric to be impregnated is necessary, as thatpressure cannot be properly applied to the exposed part of the fabricwhile a greater thickness of material (composed of the fabric and thestencil) is interposed be- To overcome omitted, so as to leave exposed aportion of the fabric on the upper side, has its counterpart placed onthe under side of the fabric under such omitted part, so'that thethickness of the material (composed of fabric and plate) passed throughthe rolls is uniform throughout, and consequently the full pressure ofthe rolls is applied to the exposed surfaces of the In the. accompanyingdrawings, which serve to illustrate the invention by way of example,Figure l is a plan of a shoe-upper made of canvas and to which amarginal friction coating of rubber is shown as applied. Fig. 2 is aplan of a stencil of sheet metal which is used to protect the fabric,with the exception of the margin or edge width, in producing theshoe-upper, the said upper being shown fitted in the cut stencil byshade-lines. Fig. 3 is a cross-section at the line 2 2, Fig. 2, showingthe upper held between the cut portions of the Fig. 4 is an invertedplan of the stencil, showing the back of part of the upper bycross-hatched lines. Figs. 5 and 6 are plan and invertedplan,respectively,showing a stencil in part covering an upper for atennis-shoe; and Fig. 7 shows the upper removed from the stencil, thecross-hatching representing the part of the fabric covered by thestencil during the friction-coating process and the parallel shade-linesrepresenting the rubber-coated parts of the upper. Fig. 8 is a planshowing a stencil-plate cut to hold the fabric forming part of the upperfor a snowshoe, of which only a marginal part is friction-coated.

As shown by the drawings, the stencil a, cut or formed as abovedescribed, differs from the ordinary stencil in having the portion a,which is cut out of the stencil-plate to allow of the fabric 6 beingcoated, applied at the back or opposite side of the fabric.

In the example shown at Fig. 8 a slit (0* only is cut in the metallicstencil-plate a to permit of a part of the fabric 6, forming the upper,being passed through the slit and exposed to the action of therubber-coated roll.

In the example shown at Figs. 2, 3, and 4 a single sheet-metal plate ahas a tongue a cut in it, and the fabric 6 is placed between the mainpart of the stencil a and the tongue (0; but in many cases such astencil cannot be formed from a single plate, and in such cases twoplates may be usedas, for example, in making the upper shown at Fig. 7ofwhich one plate, a, will have cut out of it parts corresponding to theportions of the fabric to be coated with rubber, as indicated at Z), andthe other plate, a, will be an obverse plate or have the partscorresponding to those portions of the fabric left, so that they raisethe fabric into close contact with the rubbercoated roll, or otherdevices of a similar kind may be used to attain the desired end.

In general it will be advantageous in order to produce in quantity thegoods to which isolated strips or patches or marginal coatings of rubberare applied that a continuous sheet or web of fabric be passed throughthe rolls, and in dealing with such production it will be preferable toadopt the method above described, in which the fabric is raised intoclose contact with the rubber-coated roller at the points where thefabric is to be impregnated. For that purpose I interpose betwixt thebottom roll R of the calender and the fabric carried through it acontinuous endless band of flexible material of suitable thickness, fromwhich are cut out such portions as correspond with the parts of theoverlying fabric which it is desired to leave free from the rubbercoating. As an alternative I may attain the same result by attaching theobverse parts of the stencils to the bottom roll only, suitably formingthe bottom roll R of the calender so as to produce in relief on the rollpatterns corresponding in outline with those parts of the fabric towhich it is desired to apply the rubber coating by close contact withthe rubber-coated roll. For example, if strips of friction-coating areto be applied to a fabric the bottom roll may be grooved, so as to leaveprojecting circumferential ridges on it which would raise the fabricinto close contact with the rubber-coated roll of the machine, wherebyseparate strips of the fabric would be subjected to pressure and thecoating applied thereto, while the intervening strips would be leftuncoated.

A marginal friction-coating may obviously be applied first on' one sideand then on the other side of the fabric.

Having now described my invention, what I claim, and desire to secure byLetters Patent, is-

1. The herein-described method of applying to a fabric a partialcoating, which consists in bringing the parts of the fabric to be coatedwith pressure against means for distributing the coating thereover, andholding the portions of the fabric that immediately border on theportions to be coated and which are not to be coated, in a differentplane from the portion to be coated and out of contact with saiddistributing means.

2. The herein-described method of applying to a fabric a partialcoating, which consists in bringing the parts of the fabric to becoated, with pressure against means for distributing the coatingthereover, and covering and holding the portions of the fabric thatimmediately border on the portion to be coated and which are not to becoated, in a dill'erent plane from the portion to be coated and out ofcontact with said distributing means.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

PATRICK lllllllullt lllAT'lllllW.

' Witnesses:

VVALLAoE ORANsToN FAImvnA'rn'nR, J NO. ARMSTRONG, J unr.

